Radial drill press



Mar. 6, 1923.

, 1,447,317; E. C. MUELLER.

RADIAL 0mm PRESS.

min OCT-27.21919.

2 SHEETS-SHEET l .v

WIN

HQ V v u WITNESSM I a" ,5.

INVENTOR.

ATTORNEYS.

Mar. 6, 1923.. 7 1,447,317. E. C. MUELLER.

RADIAL DRILL PRESS.

mm 001327, 1919. 2 sums-sum 2.

. A TTORNEYS.

Patented Mar. 6, 1923.

EDWARD. CARL MUELLER, OF WEST; ALLIS, WISOONS IN,.ASSIGNOR TO STERLING.

WHEELBARROW COMPANY, OF WEST ALLIS, WISCONSIN; A CORPORATION OF i...

WISCONSIN. i

' RADIAL DRILL rnnss.

Application filed October27, 1915. Serial No. 333,526;

To all 'whom it may concern:

Be it known that I, EDWARD CARL MUEL- Lnn, a citizen of the United States, and resident er West Allis, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in RadialDrill Presses, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

The present invention relates'to certain new and useful improvements in radial drill presses and has for one of its objects toprovide a drill feed lever or mechanism capable of feeding the drill spindle longitudinally and being so mounted that it may be swung in a plane at right angles to the direction of longitudinal movement of the spindle, whereby the same-maybe adapted forconvenient working on work ofvarious sizes and shapes.

Another object. of the present invent on is {to provide a vertically reciprocal sleeve member -in which the'drill-shaft is journallymountedand having counter-balanced means connected therewithand carried by one, section of the over-hungboom or beam wherebysaid sleeve membenwill beat all times urged to its upper limit of. movement wherebya" drill carried by the drlll shaft will. bein inoperative position.-

,A,.further object of the present invention is toprovidea radial drilhpress having what maybetermed a double-jointed overhung boom or beam whereby the overhung boom maybe readily positioned to conveniently workfon work of various sizes and shapes. t

A still further object of the present in- 40 vention is to provide a two-part'pivotally connected together overhung boom having the drive motor for the drill shaft mounted at the pivot of thetwo-partsof said boom or beam. 4 l I With the aboveand other objects in view which will appear as the description proceeds, my invention resides in the novel 0on struction, combination and arrangement of parts substantially ashereinafter described and more particularly defined by the appended claims, it being understood that such changes in the precise embodlment of theherein disclosed invention may be made as come. within the scope of the claims.

common use.

In the "accompanying drawings I have illustrated one complete example of the physical embodiment of my invention concording to and embodying the various features ofmy invention, the: supporting standard or post being only partially shown. Fig.2 is a view part in section and part in elevation illustrating the outer end of the outer-arm or member of the over-hung boom or beam, depicting the manner of journalling the drill shaft within the sleeve member and the sleeve member within the feed handle carrying collar.

F ig.-3 is a detailed sectional view taken onthe line 3-3 of Fig. 2, and

Fig. 4 is a detailed:sectionalview taken on the line 4- 1 of Fig. 2'. I r 1 Referring now moreparticularly to the accompanyingdrawing-the numeral 5 designates a vertical supporting standard. or post of a drill press which is preferably mounted adj acenta work supporting base or table--(not shown) and hass-mounted-on its upper end a shaft 6 to; which is swinginglyf secured the' outer end-7 of an. armx8 ofthe novel form of double jointed or swingingly connected-together two part over-hung'boom member to be described.

In the drawings I have illustrated the over-hung boom .member being pivotally but not adjustablysecured to thestandard 5,;but it will be understood that the end 7 her is swingingly as well as, vertically adjustably securedto the standard 5 as is customary in theradial drill presses now in As this feature has no important bearing upon the present invention, in that'it is oldand well-known inthe art, a non-adjustable swinging connectionbetween the standard 5 and the overhung boom .is shown in -the drawings, although -I wish it understood that Ido not consider myself as restricted to the showing with reference to this feature,

The inner end 9 of the arm 8 has formed therein two-cup shaped bearing memberslO forreceiving a suitable ball bearing (not shown) for engaging-the "pivot shaft -11 mounted therein and having its ends fixed in the spaced apart bearing members 12 formed on the inner end 13 of the outermost arm 14 of the over-hung boom or beam. The arm member 8 is substantially reenforced by a central longitudinally extending medial brace 15 which connects the ends 7 and 9 thereof, and the arm 14 is braced by a series of substantial transverse ribs or partitions 16 connecting the sides of the arm 14. The outer end of the arm 14 is formed with a pair of spaced apart bearings 17 and 18, and in the bearing 18 is journalled one end of a driven drill carrying shaft 19, and in the bearing 17 is slidably and rotatably journalled one end of a sleeve member 20, to be later described.

The shaft 19 is provided with two spaced apart enlargements 21 which are journally mounted in the end bearing portions 22 of the sleeve member. As before described, the sleeve member 20 is slidably and rotatably journalled in the bearing 17 and I provide novel means for moving the sleeve member 20 vertically to feed the shaft 19 downwardly with its drill (not shown) adapted to be carried in the socket member 23 formed on the lower end of the shaft 19. As best shown in Figures 1 and 3, the sleeve member 20 has formed in one side thereof a toothed rack 24 inmesh with a gearwheel 25 journally mounted in a collar member 26 in which the member 20 is slidably mounted. The lower end of the collar 26 is journaled in the bearing 17 and serves asa bushing between the sleeve 20 and the bearing 17. The

shaft 27 to which the gear 25 is secured by a binding nut 28 has mounted on one end a disk member 29 in which is removably mounted a feed handle 30. As best shown in Figures 2 and 3, the memberr29 has a plurality of openings 31 therein, whereby the adjustment of the handle 20 is accomplished.

By reason of theengagement of the rack 2 4 with the gear 25, when the collar member 26 is rotated by means of the handle 18, the sleeve member 20 must necessarily revolve in its bearing 17, and in this manner the handle 30 may be positioned in any desired manner for convenience in drilling. In the presses now in common use,-the drill feeding handle is not. capable of rotation, and thus often times considerable inconvenience is experienced in drilling-definite kinds of work, whereas, with my construction, the collar member 26 is free to rotate and can be positioned to suit the class of work being drilled.

4 mits the. shaft 19 to be moved vertically and still, at all times, be in drive connection with the gear 33. The beveled gear 33 is in mesh with abeveled pinion and drive shaft 35 connected with a driving motor 36 mounted upon the top base 37 formed on the topmost bearing member 12 of the. arm 14. This construction permits the swinging of the arms 8 and 14 on their pivot 11 without interrupting the drive connection between the motor and the shaft 19. The gears 33, and 34 are protected by a suitable housing'38.

A collar member 39 is rotatably mounted upon the upper end of the sleevemember 20 and is provided with a pair of opposed trunnions 40 which are pivotally engaged by the outer forked end 41 of a lever 42. The lever 42 is pivotally suspended from the arm 14 by means of a link member 43 pivoted to the upper portion of the arm, as at 44, and to the lever medially of its ends, as at 45. The inner end of the lever 42 is pivotally connected withfa counterbalanced weight being slidably mounted between the innermost pair of braces 16. The lever 42 passes through alined guide ways formed by breaking the outermost brace members 16 and connecting the break together by means of plates 48 secured on each side thereof to provide a slot therebetween. The innermost plates 48, are of less width than the adjacent brace members 16 to provide a small recess 49 for convenience in removing the counter-balanceweight 46. By this structure, it will be readily seen that when pressure is released from the handle 30, the counter-balance 46 will immediately raise the shaft 19 and consequently remove the drill from the work. The shaft 19 is held in the sleeve member 20 by means of a ball thrust bearing 50 engaged between the shoulder 51 formed by the socket member 23 and theacljacent lower end ,of the sleeve member 20 and-by suitablelock nuts 52 threaded on the upper enlargement 21 of the shaft 19. 1

From the foregoing description taken in connection with the accompanying drawing, it will be readily apparent to. those skilled in the art towhich an invention of. this character appertains, that I have provided a radial drill press which will be practical for the purposes described. 7

What I claim as my invention is: I"

1. In a drilling machine, the combination of a spindle mounted for rotative and longitudinal movement, and means for feeding the spindle longitudinally, said feeding means being mounted to swing in a plane at right angles to the direction of the longitudinal movement of the spindle.

2. In a drilling machine, the combination of a bearing, a sleeve journaled in and movable axially with respectto. said bearing, a spindle journaled in saidsleev'e, means to drive said spindle, and means associated with said bearing and swingable in a plane at right angles to the axis of said spindle, said means being adapted to effect axial movement of said sleeve in said bearing.

3. In a drilling machine, the combination of abearing, a sleeve journ'aled in and movable axially with respect to said bearing, a spindle journaled in said sleeve, means to drive said spindle, a collar surrounding said sleeve and journaled in said bearin and means carried by said collar for eecting axial movement of said sleeve in said bearm ii. In a drilling machine, the combination of a bearing, a sleeve journaled in and movable axially with respect to said bearing, a spindle journaled in said sleeve, means to drive said spindle, a collar surrounding said sleeve and journaled in said bearing, a transversely extending shaft journaled in said collar, and means connecting said shaft and sleeve for effecting axial movement of said sleeve in said bearing.

5. In a drilling machine, the combination of a bearing, a sleeve journaled in and movable axially with respect to said bearing, a spindle journaled in said sleeve, means to drive said spindle, a collar surrounding said sleeve and journaled in said bearing, atransversely extending shaft journaled in said collar, an operating member associated with said shaft, said sleeve having a longitudinally extending rack, and a pinion on said shaft in mesh with said rack, for the purpose specified.

6. In a drilling machine, the combination of a bearing, a vertically extending sleeve journaled in and movable axially with respect to said bearing, a spindle journaled in said sleeve, means to drive said spindle, means associated with said bearing and swingable in a plane at right angles to the axis of said spindle for effecting movement of said sleeve in one direction in said bearing, and counter-balancing means for effecting movement of said sleeve in said bearing in the opposite direction.

7. In a drilling machine, the combination of a bearing, a sleeve journaled in and movable axially with respect to said bearing, a spindle journaled in said sleeve, a gear slidably but non-rotatably mounted on said spindle, powermeans associated with said gear, and means associated with said bearing and swingable in a plane at right angles to the axis of said spindle for effecting axial movement of said sleeve in said bearing.

In testimony whereof, I afiix my signature.

EDWARD CARL MUELLER. 

